Emilio is handing out copies of the school newspaper. he gave out 7/12 of his copies in the morning and 2/9 of his copies in the afternoon. what fraction of his copies does he have left

3.4a=57.8 what is the the value of a

The product of (7x-2) and (20-3x)/4. when x=4

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?